Sakuya Watanuki

Sakuya Watanuki (綿貫桜哉, Watanuki Sakuya) is a member of Tsubaki's subclass and Mahiru Shirota's best friend.

Appearance
While his actual age is unknown, Sakuya is physically 15 years old. He has green hair and often wears green clothing. His eyes are red as a result of becoming a vampire. He is often seen wearing his pink headphones.

Personality
By his classmates, Sakuya is known as the class clown, as he is always making jokes and telling rumors of nearby vampires in an effort to scare his friends. The only friend who knows his true identity, however, is Mahiru.

Sakuya is shown to have a conflicting loyalty between Mahiru and Tsubaki. Sakuya will not betray Tsubaki because he knows that Tsubaki will not betray him or one of his own subclass. Sakuya is shown to be quite upset upon finding out Mahiru had been lying to him and pretended to hate Mahiru in an attempt to get Mahiru to kill him.

History
During Sakuya's childhood, his older sister was driven to suicide by their parents , who said its was an accident to the police in order to receive money of their daughter's life insurance. Sakuya knew the truth but was forced to lie about the situation, which was also his first of many lies.

At some point after his sister's death, he meet Tsubaki , the servamp of melancholy. Tsubaki gets how guilty Sakuya feels because he lied to the police - he considers himself responsible for her death, and Tsubaki told him that it wasn't his fault that his sister died. Probably knowing about his future, Tsubaki promises Sakuya, that he will come pick him up once "everything is over.

While in his adolescence, Sakuya suffered the same fate as his sister. After this occurred, Tsubaki made Sakuya a vampire and one of his subclass.

Abilities
Subclass Parameters:
 * Unlike normal subclass, Sakuya is capable of being out in sunlight without being harmed due to being one of Tsubaki's subclass.
 * Strength: 7/10
 * Tactics: 6/10
 * Cooperativeness: 3/10
 * Mental: 6/10
 * Appearance: 6/10
 * Negativity: 10/10

Tsubaki
At some point after his sister's death, he meet Tsubaki, the Servamp of melancholy. Tsubaki gets how guilty Sakuya feels because he lied to the police - he considers himself responsible for her death, and Tsubaki told him that it wasn't his fault that his sister died. Probably knowing about his future, Tsubaki promises Sakuya, that he will come pick him up once "everything is over.

While in his adolescence, Sakuya suffered the same fate as his sister. Tsubaki fulfilled his promise and save Sakuya by turning him into one of his subclass.

Sakuya is shown to have a conflicting loyalty between Mahiru and Tsubaki. Sakuya will not betray Tsubaki because he knows that Tsubaki will not betray him or one of his own subclass.

Mahiru Shirota
Sakuya is Mahiru's best friend, both always hung out together after school with their other two friends. Even after Sakuya is revealed to be Tsubaki's subclass and has been manipulating his memories about being childhood friends while in fact they only knew each other for a year, Mahiru still considers Sakuya as a friend. This feeling grew stronger once Mahiru knows Sakuya's past and his true feelings, making him determined to stop Tsubaki so Sakuya can be freed. Sakura initially only befriends Mahiru out of boredom but grew to cherish their friendship more than his loyalty to Tsubaki. Their friendship becomes stronger after Mahiru reaches out to Sakuya and vows to free him, making Sakuya glad and grateful for Mahiru for finding him.

Unnamed Parents
Sakuya had negative relationships with his parents. During Sakuya's childhood, his older sister was driven to suicide by their parents, who said its was an accident to the police in order to receive money of their daughter's life insurance. Sakuya knew the truth but was forced to lie about the situation, which was also his first of many lies.

While in his adolescence, Sakuya suffered the same fate as his sister. It is unknown what happened to Sakuya and his older sister's parents after Sakuya was made into Tsubaki's subclass.

Unnamed Older Sister
Sakuya seems to have a close relationship with his older sister before she was driven to suicide by their parents. Before her death, Sakuya's sister made their parents promise not to hurt her little brother.

Quotes

 * "I was born in a town of liars, as a child of liars. A year ago I sneaked into a middle school to kill time, but in truth I probably wished for something else. [...] Just like that, because of that hand and that voice, I thought... "Man, I'd love to be friends with this guy." Mahiru... thank you for finding me... thank you for reaching out to me...!" (About Mahiru Shirota)
 * "So... how much of what I said was a lie?"

Trivia

 * Sakuya's favourite dish is Okonomiyaki ( お好み焼き ).
 * He dislikes lies and liars.
 * His hobbies are browsing through music shops and playing rhythm games.
 * His best subject is math.
 * His worst subject is ethics and Japanese (especially modern Japanese).
 * His favorite color is firefly green.
 * The stripes on his jacket are firefly green.

Sakuya Watanuki
 * He is sometimes seen with pink headphones.
 * In the drama CD "The vampire-only summer vacation" Sakuya admits that he'd like to be called "Sakkun". 
 * In the first popularity poll he came third with 2000 votes.
 * He gets envious of anyone that calls themselves Mahiru's friend.
 * His zodiac sign is Aries.
 * His favorite drink is carbonated drinks.
 * He did not participate in any club activities while he was in school.
 * Like Tsubaki and his other subclass, Sakuya has a flower themed name. The kanji for his given name, Sakuya, includes a kanji that can mean Cherryblossom (桜 Sakura).